Machiavellianism is an antisocial interpersonal style involving the use of manipulative, deceptive, and coercive behaviors in the pursuit of self-interest. Although widely studied as a "dark" personality trait in adults, relatively little is known about the developmental correlates of Machiavellian tendencies earlier in life. The present…

Prior studies have indicated that prosocial behavior might be a protective factor for developing internalizing and externalizing behavioral problems. However, little research has been conducted on within-person changes of prosocial behavior and behavioral problems over time. With random-intercept cross-lagged panel models (RI-CLPMs), the current…

Narcissistic youth use social media to engage in a variety of self-promotional behaviors, which have either antisocial or prosocial characteristics. Differing views exist to explain the processes underlying narcissistic self-promotion, either characterizing these actions as intentional, or as impulsive. This study compared intentional…

A latent profile analysis was applied to explore heterogeneity in the social and classroom behaviors of 224 peer-rejected elementary school students (56% White, 68% male, Grades 1-4, M[subscript age] = 8.1 years). Profile indicators included teacher ratings of social skills and problem behaviors on the Social Skills Improvement System (SSIS) and…

A latent profile analysis was applied to explore heterogeneity in the social and classroom behaviors of 224 peer-rejected elementary school students (56% White, 68% male, Grades 1-4, M age = 8.1 years). Profile indicators included teacher ratings of social skills and problem behaviors on the Social Skills Improvement System (SSIS) and peer…

The development of children's lie-telling abilities is considered to be a social and cognitive milestone. While occasional lying is developmentally appropriate, the use of frequent, antisocial lies as a maladaptive problem-solving mechanism can indicate behaviour problems. Since lying is often considered a moral transgression, researchers should…

The present study discusses the deformation of personality in delinquent behavior and how it can be corrected. [This article was translated by Susan Welsh.]

Witnessing violence can negatively affect students' outcomes, but their friendships may mitigate those effects. This study investigated the extent to which seeing someone shot in the last year related to seven school-related outcomes. Additionally, it examined the extent to which prosocial and deviant friends moderate these relationships. This…

Basic perspective taking and mentalizing abilities develop in childhood, but recent studies indicate that the use of social perspective taking to guide decisions and actions has a prolonged development that continues throughout adolescence. Here, we aimed to replicate this research and investigate the hypotheses that individual differences in…

In this longitudinal multiinformant study negative emotionality and sensory processing sensitivity were compared as susceptibility markers among kindergartners. Participating children (N = 264, 52.9% boys) were Dutch kindergartners (M[subscript age] = 4.77, SD = 0.60), followed across three waves, spaced seven months apart. Results show that…

There is a growing need for valid measures that can be administered efficiently in school settings to assess the impact of school-based preventive interventions. The current paper aimed to establish a balance among assessment efficiency, reliability, and the measurement properties of an instrument widely used to assess the impact of school-based…

There is a growing need for valid measures that can be administered efficiently in school settings to assess the impact of school-based preventive interventions. The current article aimed to establish a balance among assessment efficiency, reliability, and the measurement properties of an instrument widely used to assess the impact of school-based…

Modern definitions of complete mental health include both positive and negative indicators of psychological functioning. We examined the associations between peer relationships (victimization and receipt of prosocial acts) and multiple indicators of mental health that represent subjective well-being (i.e., life satisfaction, positive and negative…

A brief training package consisting of pre-teaching of appropriate grocery item--gathering skills and reinforcement for appropriate behavior was used to teach a child diagnosed with autism to remain in a store and participate in shopping without exhibiting tantrums. The training package began with teaching the necessary component skills and…

This study investigated the role of the interaction between prosocial behavior and contextual (school and neighborhood) risk in children's trajectories of externalizing and internalizing problems at ages 3, 5, and 7. The sample was 9,850 Millennium Cohort Study families who lived in England when the cohort children were aged 3. Neighborhood…